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You searched for: subject:"Ionizing radiation."
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[texts]Proceedings of a congressional seminar on low-level ionizing radiation: a report - United States: Congress
http://uf.catalog.fcla.edu/uf.jsp?st=UF026011057&ix=pm&I=0&V=D&pm=1
Keywords: Ionizing radiation
Downloads: 97
[texts]Rules and regulations for the protection of the health and safety of employees from occupational diseases caused by ionizing radiation, effective December 15, 1978 - Massachusetts. Division of Occupational Hygiene

Keywords: Industrial hygiene; Ionizing radiation
Downloads: 5
[texts]Gas phase and surface radiation chemistry of hydrogen-carbon monoxide mixtures - St. Charles, Frank Kelley
Typescript
Keywords: Carbon monoxide; Hydrogen; Ionizing radiation
Downloads: 318
[texts]An absorbed-dose/dose-rate dependence for the alanine-EPR dosimetry system and its implications in high-dose ionizing radiation metrology (Volume 113) - Desrosiers, M. F.
Journal of Research of the National Institute of Standards and Technology
Keywords: dosimetry; alanine; dosimeter; ionizing radiation
Downloads: 152
[texts]Morphologic changes in the lymphocytes of persons exposed to ionizing radiations - Los Alamos Scientific Laboratory
http://uf.catalog.fcla.edu/uf.jsp?st=UF005023746&ix=nu&I=0&V=D&pm=1
Keywords: Lymphocytes; Ionizing radiation; Radiation--Physiological effect
Downloads: 63
[texts]Report on radiation health and safety - United States: Congress
http://uf.catalog.fcla.edu/uf.jsp?st=UF024771816&ix=pm&I=0&V=D&pm=1
Keywords: Ionizing radiation--Physiological effect; Radiation--Physiological effect
Downloads: 118
[texts]Control of Hazards to Health from Ionizing Radiation Used by the Army Medical Department - Department of the Army

Keywords: military medical; military-medical; health; ionizing radiation
Downloads: 43
[texts]Contribution to the theory of the adsorption effect at the surface of semiconductors and gels under the action of ionizing radiation - Ablyayev, Sh. A.
Adsorption effect on surface of semiconductors and gels under ionizing radiation
Keywords: ADSORPTION; GELS; IONIZING RADIATION; POLARITY; SEMICONDUCTORS (MATERIALS); ADSORPTION; GEL; IONIZING RADIATION; SEMICONDUCTOR
Downloads: 72
[texts]The problem of establishing tolerable doses of ionizing radiation for crew members of spacecrafts - Domshlak, M. P.
Tolerable dosages of ionizing radiation for crew members of spacecrafts
Keywords: CREWS; DOSAGE; IONIZING RADIATION; SPACECREWS; TOLERANCES (PHYSIOLOGY); IONIZING RADIATION; RADIATION DOSE; SPACECREW; TOLERANCE /BIOL/
Downloads: 70
[texts]Endurance of external acceleration increased as a result of exposure to ionizing radiation - Davydov, B. I
Endurance of extremal acceleration increased as result of exposure to ionizing radiation
Keywords: ACCELERATION; ACCELERATION; IONIZING RADIATION; MOUSE; ANIMALS; CHEST; CLOTTING; COAGULATION; IONIZING RADIATION; MICE; MORTALITY; RADIATION DOSAGE
Downloads: 56
[texts]Medical aspects of nuclear weapons and their effects on medical operations : subcourse MED447 - Academy of Health Sciences
"June 1990."
Keywords: United States. Army; Radiation; Nuclear weapons; Ionizing radiation
Downloads: 117
[texts]Water calorimetry: The heat defect (Volume 102) - Klassen, NV
Journal of Research of the National Institute of Standards and Technology
Keywords: water calorimetry; absorbed dose to water; ionizing radiation
Downloads: 60
[texts]Proceedings of the Conference on the Role of Simulation in Space Technology, part A - NON
Vacuum technology, meteoroids, magnetic fields, electromagnetic radiation, and ionizing particles - conference on role of simulation in space technology
Keywords: AEROSPACE ENGINEERING; VACUUM SYSTEMS; IONIZING RADIATION; METEOROID; SIMULATED EMISSION; SPACE SIMULATION; VACUUM SYSTEM; CONFERENCES; ELECTROMAGNETIC RADIATION; IONIZING RADIATION; MAGNETIC FIELDS; METEOROIDS; SPACE ENVIRONMENT SIMULATION; SYSTEMS SIMULATION; VACUUM
Downloads: 189
[texts]Changes in nerve cells as a result of the action of ionizing radiation - Smirnov, A. D
Histological changes in central nervous system structures for Roentgen irradiated dogs
Keywords: CARDIOVASCULAR SYSTEM; PATHOGENESIS; CENTRAL NERVOUS SYSTEM; DOG; HISTOLOGY; IONIZING RADIATION; CELLS (BIOLOGY); CENTRAL NERVOUS SYSTEM; DOGS; HISTOLOGY; IONIZING RADIATION; IRRADIATION; NERVOUS SYSTEM; NEURONS
Downloads: 60
[texts]BAD WEATHER LANDING TODAY: ITS PROBLEMS AND LIMITATIONS - BRUNNER, D
THE LIMITATIONS OF INSTRUMENT LANDING SYSTEM (ILS) APPROACH PROCEDURES ARE DISCUSSED FOR VARIOUS CATEGORIES OF LANDING CONDITIONS. LEGAL ASPECTS AND PROCEDURES FOR CATEGORY 1, 2, AND 3 CONDITIONS ARE DESCRIBED. DEFICIENCIES OF EXISTING SYSTEMS FOR POOR WEATHER CONDITIONS ARE ELABORATED AND REMEDIES SUGGESTED. RELATIONSHIPS BETWEEN LANDING REQUIREMENTS, WEATHER CONDITIONS, AND TRAFFIC FLOW AND DENSITY ARE ESTABLISHED.
Keywords: ACCELERATION TOLERANCE; CENTRAL NERVOUS SYSTEM; IONIZING RADIATION; VIBRATION EFFECTS; BEHAVIOR; BRAIN; OXYGEN METABOLISM; STRESSES; VESTIBULAR TESTS
Downloads: 64
[texts]LASERS - ZAGURA, I
LASER SYSTEMS OF VARIOUS CONFIGURATIONS ARE DESCRIBED AND THEIR TECHNOLOGICAL APPLICATIONS ARE CONSIDERED. OUTLINED ARE LASER SYSTEMS IN RADIO ASTRONOMY, RADAR, EARTH AND SPACE COMMUNICATIONS, WELDING AND DRILLING OPERATIONS, METAL VAPORIZATION, AUTOMATIC CONTROL SYSTEMS, ATMOSPHERIC SOUNDINGS, AND HOLOGRAPHY.
Keywords: IONIZING RADIATION; STERILIZATION; VAN DE GRAAFF ACCELERATORS; COSTS; GAMMA RAYS; PROBABILITY THEORY
Downloads: 133
[texts]SATURN IB/S-IVB STAGE SEPARATION CONTROLLABILITY REPORT - NON
THIS REPORT, USING THE LATEST AERODYNAMIC, ENGINE, AND STAGE SEQUENCING DATA AVAILABLE, INVESTIGATES THE CONTROLLABILITY OF THE SATURN S-IVB/IB STAGE DURING SEPARATION FROM THE S-IB STAGE. POST SEPARATION ATTITUDE TRANSIENTS AND ENGINE DEFLECTION TRANSIENTS ARE PRESENTED FOR A NOMINAL CONDITION USING PARAMETERS WHICH ARE SLIGHTLY HIGHER THAN THE 90 PER CENT CONFIDENCE LEVEL VALUES OBTAINED FROM SATURN S-I FLIGHT DATA PRESENTED FOR INDIVIDUAL AND COMBINED DISPERSIONS OF THESE PARAMETERS...
Keywords: BIOLOGICAL EFFECTS; IONIZING RADIATION; MICROORGANISMS; SPACECRAFT STERILIZATION; INDEPENDENT VARIABLES; RADIATION DOSAGE; RADIATION EFFECTS
Downloads: 116
[texts]Update on the Greenland Ice Sheet Melt Extent: 1979-1999 - Abdalati, Waleed
Analysis of melt extent on the Greenland ice sheet is updated to span the time period 1979-1999 is examined along with its spatial and temporal variability using passive microwave satellite data. In order to acquire the full record, the issue of continuity between previous passive microwave sensors (SMMR, SSM/I F-8, and SSM/I F-11), and the most recent SSM/I F-13 sensor is addressed. The F-13 Cross-polarized gradient ratio (XPGR) melt-classification threshold is determined to be -0.0154...
Keywords: RADIATION EFFECTS; IONIZING RADIATION; OPTICAL EQUIPMENT; COUPLERS; ISOLATORS; SPACECRAFT EQUIPMENT; EXTRATERRESTRIAL ENVIRONMENTS
Downloads: 92
[texts]Saturn S-2 materials and processes development during second half of 1967 - Carr, W. A
No Abstract Available
Keywords: BIOLOGICAL EFFECTS; MICROORGANISMS; SPACECRAFT STERILIZATION; ULTRASONIC RADIATION; IONIZING RADIATION; RADIATION DOSAGE; RADIATION EFFECTS
Downloads: 219
[texts]Active shielding concepts for the ionizing radiation in space final report, 1 sep. 1962 - 31 aug. 1963 - Dow, N. F.
Confined electromagnetic field shielding of spacecraft - active shielding of ionized radiation in space
Keywords: CONFINEMENT; ELECTROMAGNETIC FIELDS; IONIZING RADIATION; RADIATION SHIELDING; SHIELDING; SPACECRAFT SHIELDING; ELECTROMAGNETIC FIELD; RADIATION; SPACECRAFT SHIELDING
Downloads: 123
[texts]Effects of the combined stresses of space flight on certain body functions (kombinirovannoye vozdeystviye faktorov kosmicheskogo poleta na nekotoryye funktsii organizma) - Apanasenko, Z. I.
Effect of space flight acceleration, vibration, and ionizing radiation on oxygen metabolism and functions of central nervous system
Keywords: ACCELERATION TOLERANCE; ACCELERATION TOLERANCE; CENTRAL NERVOUS SYSTEM; IONIZING RADIATION; OXYGEN METABOLISM; RADIATION EFFECT; SPACE FLIGHT; VIBRATION EFFECT; CENTRAL NERVOUS SYSTEM; COMBINED STRESS; IONIZING RADIATION; OXYGEN METABOLISM; RADIATION EFFECTS; SPACE FLIGHT; VIBRATION; VIBRATION EFFECTS
Downloads: 49
[texts]Nonlinear Coherent Optical Image Processing Using Logarithmic Transmittance of Bacteriorhodopsin Films - Downie, John D
The transmission properties of some bacteriorhodopsin-film spatial light modulators are uniquely suited to allow nonlinear optical image-processing operations to be applied to images with multiplicative noise characteristics. A logarithmic amplitude-transmission characteristic of the film permits the conversion of multiplicative noise to additive noise, which may then be linearly filtered out in the Fourier plane of the transformed image...
Keywords: INTERGALACTIC MEDIA; QUASARS; IONIZING RADIATION; HELIUM; ABSORPTION SPECTRA; LINE SPECTRA; RADIATION ABSORPTION; HUBBLE SPACE TELESCOPE; LYMAN ALPHA RADIATION; CLOUDS; PHOTOIONIZATION
Downloads: 66
[texts]Symbolic Heuristic Search for Factored Markov Decision Processes - Feng, Zheng-Zhu
We describe a planning algorithm that integrates two approaches to solving Markov decision processes with large state spaces. State abstraction is used to avoid evaluating states individually. Forward search from a start state, guided by an admissible heuristic, is used to avoid evaluating all states. We combine these two approaches in a novel way that exploits symbolic model-checking techniques and demonstrates their usefulness for decision-theoretic planning.
Keywords: IONIZING RADIATION; MILITARY TECHNOLOGY; ELECTRIC POTENTIAL; DRAINAGE; DOSAGE; TRANSISTORS; RADIATION EFFECTS; DEPLETION; CMOS; THRESHOLD VOLTAGE; SEMICONDUCTORS (MATERIALS); OXIDES
Downloads: 77
[texts]Heavy Gas Conversion of the NASA Langley Transonic Dynamics Tunnel - Corliss, James M.
The heavy gas test medium has recently been changed in the Transonic Dynamics Tunnel (TDT) at the NASA Langley Research Center. A NASA Construction of Facilities project has converted the TDT heavy gas from dichlorodifluoromethane (R12) to 1,1,1,2 tetrafluoroethane (R134a). The facility s heavy gas processing system was extensively modified to implement the conversion to R134a. Additional system modifications have improved operator interfaces, hardware reliability, and quality of the research da...
Keywords: IONIZING RADIATION; SPACE EXPLORATION; AEROSPACE ENVIRONMENTS; ENVIRONMENTAL CONTROL; SPACE SUITS; ORGANS; PROTECTION; EXTRATERRESTRIAL RADIATION; LUNAR SURFACE; MARS SURFACE
Downloads: 75
[texts]THE MEASUREMENT OF LARGE WIND ENERGY GENERATORS - MARTINI, C
THE WEIGHT COMPARISON OF ENERGY GENERATORS ACCORDING TO THE HONNEF SYSTEM IS REPRESENTED IN CURVES WHEREIN THE WEIGHT IS PLOTTED AS A FUNCTION OF THREE VARIABLES: THE NUMBER OF POLES, AIR INDUCTION, AND DIAMETER.
Keywords: COSMIC RAYS; ENERGY SPECTRA; PROTON SATELLITES; SATELLITE-BORNE INSTRUMENTS; AEROSPACE ENVIRONMENTS; IONIZING RADIATION; NUCLEAR PHYSICS; RADIATION MEASUREMENT
Downloads: 71
[texts]Study of Semi-Span Model Testing Techniques - Gatlin, Gregory M.
An investigation has been conducted in the NASA Langley 14- by 22-Foot Subsonic Tunnel in order to further the development of semi-span testing capabilities. A twin engine, energy efficient transport (EET) model with a four-element wing in a takeoff configuration was used for this investigation. Initially a full span configuration was tested and force and moment data, wing and fuselage surface pressure data, and fuselage boundary layer measurements were obtained as a baseline data set...
Keywords: MICROWAVE SOUNDING; ELECTROMECHANICS; POLICIES; FUNCTIONAL DESIGN SPECIFICATIONS; STRUCTURAL DESIGN CRITERIA; USER REQUIREMENTS; COMPONENTS; DOSAGE; IONIZING RADIATION; ELECTRONICS
Downloads: 67
[texts]Method of manufacture of bonded fiber flywheel - NON
Layers of fiberglass cloth, generally forming a circular mass, are prestressed by rotation during the curing of epoxy which surrounds and thereby couples together fibers and layers of the cloth.
Keywords: FREQUENCY STABILITY; RADIATION DOSAGE; IONIZING RADIATION; IRRADIATION; QUARTZ CRYSTALS; RADIATION HARDENING; ALPHA PARTICLES; CRYSTAL STRUCTURE; FAST NEUTRONS; PROTONS
Downloads: 98
[texts]Platform Evolution Studies - Walton, Barbar
Platform evolution studies have focused on developing two types of platforms: the Geostationary Platform, for use as an observatory in NASA's Mission-to-Planet-Earth (MPE) initiative, and a co-orbiting platform, for use as a branching mechanism for the Space Station Freedom manned base. In 1989, platform evolution efforts also documented existing polar platform scares for servicing and for co-orbiting platform configurations...
Keywords: ATMOSPHERIC RADIATION; IONIZING RADIATION; EXTRATERRESTRIAL RADIATION; FLIGHT CREWS; SUPERSONIC TRANSPORTS; AIRLINE OPERATIONS; COMMERCIAL AIRCRAFT; RISK; RADIATION DOSAGE
Downloads: 78
[texts]AMPEROMETRIC TITRATION OF METAL IONS WITH EDTA. THE ANALYTICAL APPLICATION OF THE OXIDE ELECTRODE - KAINZ, G.
IN THE AMPEROMETRIC TITRATION OF METAL IONS WITH ETHYLENEDIAMINETETRAACETIC ACID (EDTA), AN OXIDE ELECTRODE IS EMPLOYED (A PLATINUM ELECTRODE COATED WITH AN OXIDE LAYER. THESE ELECTRODES ARE ACTIVE AND STABLE OVER A RELATIVELY WIDE RANGE OF PH AND WILL REACT TO AN EXCESS OF EDTA (AFTER THE EQUIVALENCE POINT). THE PROCEDURES ARE SPECIFIED: (1) FOR DETERMINING INDIVIDUAL METAL IONS, AND (2) FOR DETERMINING 2 IONS WHEN PRESENT TOGETHER...
Keywords: DRY HEAT; TEMPERATURE EFFECTS; THERMAL RESISTANCE; IONIZING RADIATION; MICROORGANISMS; PLANETARY QUARANTINE; STERILIZATION EFFECTS; ATMOSPHERIC MOISTURE; BACILLUS; EXOBIOLOGY; RADIANT FLUX DENSITY
Downloads: 247
[texts]Comparison of AMZIRC and GRCop-84 - de Groh, Henry C. III
The mechanical properties of two copper alloys with high thermal conductivity, GRCop-84 and AMZIRC, were compared. These are competing alloys in high temperature, high heat flux applications such as rocket nozzles. The GRCop-84 data presented was taken from previous work. The results of new tensile, creep, and compression tests on AMZIRC are presented. Tests were done on as-received hard drawn material, and on material that had been subjected to a heat treatment designed to simulate a brazing op...
Keywords: DEOXYRIBONUCLEIC ACID; RADIATION DAMAGE; IONIZING RADIATION; CHARGED PARTICLES; STOCHASTIC PROCESSES; PHYSIOLOGICAL RESPONSES; MONTE CARLO METHOD; CENTRAL NERVOUS SYSTEM
Downloads: 128
[texts]Assimilation of ozone profiles from the Improved Limb Atmospheric Spectrometer - Stajner, Ivanka
Ozone data from the Improved Limb Atmospheric Spectrometer-II (ILAS-II) were included in addition to other satellite observations in the ozone assimilation system at the Global Modeling and Assimilation Office (GMAO) of NASA/Goddard. The control run assimilated data from NOAA 16 Solar Backscatter Ultraviolet/2 (SBUV/2) and Polar Ozone and Aerosol Measurement III (POAM III) instruments. Persistent impacts over Antarctica and transient impacts over northern middle and high latitudes are seen from ...
Keywords: MICROWAVE ANISOTROPY PROBE; ANISOTROPY; MICROWAVES; IONIZING RADIATION; LINEAR INTEGRATED CIRCUITS; RADIATION EFFECTS; POSEIDON SATELLITE; TDR SATELLITES; TOPEX
Downloads: 53
[texts]Operational risk management for the United States Manned Space Flight Program - Harlan, Charles S
No Abstract Available
Keywords: CRYSTAL DEFECTS; FIBERS; GRAPHITE-EPOXY COMPOSITES; MECHANICAL PROPERTIES; POLYIMIDES; RADIATION EFFECTS; IONIZING RADIATION; MORPHOLOGY; X RAY DIFFRACTION
Downloads: 63
[texts]RADIATION CHARACTERISTICS OF MOIST GROUND IN THE ULTRA-HIGH FREQUENCY RANGE - POPOV, A. Y.
DETAILED CALCULATIONS WERE MADE OF THE EMISSIVITY AND THE COEFFICIENT OF POLARIZATION OF RADIO EMISSION OF MOIST GROUND IN THE WAVELENGTH RANGE FROM 0.8 TO 226 CM AND WITH MOISTURE CONTENT UP TO 30 PERCENT. THE CALCULATIONS WERE BASED ON EXPERIMENTAL MOISTURE FUNCTIONS OF ELECTRICAL PARAMETERS OF THE GROUND. THE LIMITS TO THE APPLICABILITY OF THE APPROXIMATION DELTA TG L ARE INDICATED. THE EFFECT OF ATMOSPHERIC GLOW ON THE RADIOBRIGHTNESS TEMPERATURE AND THE COEFFICIENT OF POLARIZATION OF THE RA...
Keywords: CELLS (BIOLOGY); RADIATION TOLERANCE; RADIOBIOLOGY; TISSUES (BIOLOGY); GROWTH; IONIZING RADIATION; SPLEEN; THYMUS GLAND; GAMMA RAYS; LYMPHOCYTES; MICE; RADIATION EFFECTS
Downloads: 68
[texts]A Study of Quality of Service Communication for High-Speed Packet-Switching Computer Sub-Networks - Cui, Zhenqia
In this thesis, we analyze various factors that affect quality of service (QoS) communication in high-speed, packet-switching sub-networks. We hypothesize that sub-network-wide bandwidth reservation and guaranteed CPU processing power at endpoint systems for handling data traffic are indispensable to achieving hard end-to-end quality of service. Different bandwidth reservation strategies, traffic characterization schemes, and scheduling algorithms affect the network resources and CPU usage as we...
Keywords: RADIATION DOSAGE; COMMUNICATION SATELLITES; EXTRATERRESTRIAL RADIATION; IONIZING RADIATION; LOW EARTH ORBITS; PARTICLE ENERGY; RADIATION TRAPPING; TRAPPED PARTICLES; INTERNATIONAL SPACE STATION; PROTONS
Downloads: 71
[texts]Evaluation of Space Power Materials Flown on the Passive Optical Sample Assembly - Jaworske, Donald A.
Evaluating the performance of materials on the exterior of spacecraft is of continuing interest, particularly in anticipation of those applications that will require a long duration in low Earth orbit. The Passive Optical Sample Assembly (POSA) experiment flown on the exterior of Mir as a risk mitigation experiment for the International Space Station was designed to better understand the interaction of materials with the low Earth orbit environment and to better understand the potential contamin...
Keywords: POLYVINYL ALCOHOL; PRESSURE RATIO; WATER; BEAMS (RADIATION); EMISSION; FLUENCE; NUCLEAR RADIATION; IONIZING RADIATION; CROSSLINKING; TRANSPORT PROPERTIES; ION SOURCES; IRRADIATION; PARTICLE TRAJECTORIES; DIFFUSION; PERMEABILITY
Downloads: 87
[texts]Tele-assistance for semi-autonomous robots - Rogers, Erika
This paper describes a new approach in semi-autonomous mobile robots. In this approach the robot has sufficient computerized intelligence to function autonomously under a certain set of conditions, while the local system is a cooperative decision making unit that combines human and machine intelligence. Communication is then allowed to take place in a common mode and in a common language. A number of exception-handling scenarios that were constructed as a result of experiments with actual sensor...
Keywords: ANGULAR RESOLUTION; LUMINOSITY; MAGNITUDE; MASSIVE STARS; MOLECULAR GASES; MOLECULES; CONTINUUMS; EXTINCTION; FLUX DENSITY; MAXIMUM ENTROPY METHOD; MOLECULAR CLOUDS; SAGITTARIUS CONSTELLATION; HYDROGEN; IONIZING RADIATION
Downloads: 70
[texts]Validity of Using a Fixed Analog Input for Evaluating the SEU Sensitivity of a Flash Analog-to-Digital Converter - Buchner, Stephen
The SEU rate in a flash ADC (AD9058) on board a space experiment varied by more than an order of magnitude, depending on the input. A pulsed laser aided in elucidating the reasons, which were found to be the result of the unique design of the AD9058.
Keywords: ALGORITHMS; HEALTH; IONIZING RADIATION; NUCLEAR INTERACTIONS; MATHEMATICAL MODELS; TRANSPORT THEORY; ANISOTROPY; NEUTRONS; AEROSPACE ENVIRONMENTS; BOLTZMANN TRANSPORT EQUATION; EXPOSURE; GALACTIC COSMIC RAYS
Downloads: 49
[texts]Parallel Calculation of Sensitivity Derivatives for Aircraft Design using Automatic Differentiation - Bischof, c. H.
Sensitivity derivative (SD) calculation via automatic differentiation (AD) typical of that required for the aerodynamic design of a transport-type aircraft is considered. Two ways of computing SD via code generated by the ADIFOR automatic differentiation tool are compared for efficiency and applicability to problems involving large numbers of design variables. A vector implementation on a Cray Y-MP computer is compared with a coarse-grained parallel implementation on an IBM SP1 computer, employi...
Keywords: DEOXYRIBONUCLEIC ACID; PARTICLE INTERACTIONS; THYMINE; DISSOCIATION; ELECTRON ENERGY; CROSS SECTIONS; GUANINES; MODELS; BIOCHEMISTRY; ELECTRON IMPACT; IONIZING RADIATION; PHOSPHATES; RADIATION DAMAGE; SUGARS; BASES (CHEMICAL); PYRIMIDINES; DATA BASES
Downloads: 72
[texts]Towards an MHD Theory for the Standoff Distance of Earth's Bow Shock - Carins, Iver H.
A magnetohydrodynamic (MHD) theory is developed for the standoff distance a(s) of the bow shock and the thickness Delta(ms) of the magnetosheath, using the empirical Spreiter et al. relation Delta(ms) = kX and the MHD density ratio X across the shock. The theory includes as special cases the well-known gasdynamic theory and associated phenomenological MHD-like models for Delta(ms) and As. In general, however, MHD effects produce major differences from previous models, especially at low Alfev (Ma...
Keywords: BACKGROUND RADIATION; STELLAR MODELS; ULTRAVIOLET TELESCOPES; GUNN EFFECT; HELIUM; HYDROGEN; PHOTOIONIZATION; STELLAR SPECTRA; INTERGALACTIC MEDIA; IONIZING RADIATION; MASSIVE STARS; STAR FORMATION; STARBURST GALAXIES; ULTRAVIOLET RADIATION; METALS; QUASARS
Downloads: 130
[texts]Advancement of Bi-Level Integrated System Synthesis (BLISS) - Sobieszczanski-Sobieski, J.
Bi-Level Integrated System Synthesis (BLISS) is a method for optimization of an engineering system, e.g., an aerospace vehicle. BLISS consists of optimizations at the subsystem (module) and system levels to divide the overall large optimization task into sets of smaller ones that can be executed concurrently. In the initial version of BLISS that was introduced and documented in previous publications, analysis in the modules was kept at the early conceptual design level...
Keywords: RADIATION TRAPPING; SPACE TRANSPORTATION SYSTEM FLIGHTS; SPACECRAFT DESIGN; PROTONS; ELECTRONS; DOSAGE; MATHEMATICAL MODELS; IONIZING RADIATION; LOW EARTH ORBITS; SCIENTIFIC SATELLITES; SPACE SHUTTLES
Downloads: 76
[texts]Use of Tabulated Thermochemical Data for Pure Compounds - Jacobson, Nathan S
Thermodynamic data for inorganic compounds is found in a variety of tabulations and computer databases. An extensive listing of sources of inorganic thermodynamic data is provided. The three major tabulations are the JANAF tables. Thermodynamic Properties of Individual Substances, and the tabulation by Barin. The notation and choice of standard states is different in each of these tabulations, so combining data from the different tabulations is often a problem...
Keywords: RANDOM ACCESS; LOGIC CIRCUITS; DATA SIMULATION; ERRORS; FAILURE MODES; RANDOM ACCESS MEMORY; SINGLE EVENT UPSETS; IONIZING RADIATION; LINEAR ENERGY TRANSFER (LET); TECHNOLOGY UTILIZATION; CMOS; LATCH-UP; INTEGRATED CIRCUITS
Downloads: 217
[texts]Analysis of space systems for the space disposal of nuclear waste follow-on study. Volume 1: Executive summary - NON
The impact on space systems of three alternative waste mixes was evaluated as part of an effort to investigate the disposal of certain high-level nuclear wastes in space as a complement to mined geologic repositories. A brief overview of the study background, objectives, scope, approach and guidelines, and limitations is presented. The effects of variations in waste mixes on space system concepts were studied in order to provide data for determining relative total system risk benefits resulting ...
Keywords: ACCELERATED LIFE TESTS; COMPOSITE MATERIALS; EXTRATERRESTRIAL RADIATION; IONIZING RADIATION; RADIATION DOSAGE; SPACECRAFT CONSTRUCTION MATERIALS; GEOSYNCHRONOUS ORBITS; INNER RADIATION BELT; SPACE TRANSPORTATION SYSTEM
Downloads: 77
[texts]Crustal dynamics project data analysis, 1991: VLBI geodetic results, 1979 - 1990 - Ma, C.
The Goddard VLBI group reports the results of analyzing 1412 Mark II data sets acquired from fixed and mobile observing sites through the end of 1990 and available to the Crustal Dynamics Project. Three large solutions were used to obtain Earth rotation parameters, nutation offsets, global source positions, site velocities, and baseline evolution. Site positions are tabulated on a yearly basis from 1979 through 1992...
Keywords: ALGORITHMS; POSITION (LOCATION); SPACECRAFT COMPONENTS; STRUCTURAL WEIGHT; IONIZING RADIATION; LONG DURATION EXPOSURE FACILITY; RADIATION SHIELDING; RADIATION TRANSPORT; RAY TRACING; THREE DIMENSIONAL MODELS; DOSIMETERS; GEOMETRY
Downloads: 182
[texts]Reduction of hunting in synchronous motor - NON
Passive or active networks responsive to changes in motor drive current alter the motor drive voltage or phase to damp hunting of the motor.
Keywords: LUNAR RADIATION; EXTRAVEHICULAR ACTIVITY; NUCLEAR INTERACTIONS; SPACE PLASMAS; RADIATION PROTECTION; RISK; SOLAR CORPUSCULAR RADIATION; IONIZING RADIATION; MARS ENVIRONMENT; PLASMA RADIATION; GALACTIC RADIATION; SPACE MISSIONS
Downloads: 141
[texts]Computational Tools and Facilities for the Next-Generation Analysis and Design Environment - NON
This document contains presentations from the joint UVA/NASA Workshop on Computational Tools and Facilities for the Next-Generation Analysis and Design Environment held at the Virginia Consortium of Engineering and Science Universities in Hampton, Virginia on September 17-18, 1996. The presentations focused on the computational tools and facilities for analysis and design of engineering systems, including, real-time simulations, immersive systems, collaborative engineering environment, Web-based...
Keywords: LINEAR ENERGY TRANSFER (LET); ACCURACY; IONIZING RADIATION; LOW EARTH ORBITS; MATHEMATICAL MODELS; RADIATION MEASUREMENT; LONG DURATION EXPOSURE FACILITY; SPACECRAFT ORBITS; PROTONS
Downloads: 205
[texts]Earth resources: A continuing bibliography with indexes (issue 59) - NON
This bibliography lists 518 reports, articles, and other documents introduced into the NASA scientific and technical information system between July 1 and September 30, 1988. Emphasis is placed on the use of remote sensing and geophysical instrumentation in spacecraft and aircraft to survey and inventory natural resources and urban areas. Subject matter is grouped according to agriculture and forestry, environmental changes and cultural resources, geodesy and cartography, geology and mineral res...
Keywords: ASTRONOMY; LIGHT CURVE; LINE SPECTRA; PARTICLE INTERACTIONS; UNIVERSE; X RAY SOURCES; NEUTRINOS; PARTICLE DECAY; RADIOACTIVE DECAY; SUPERNOVA 1987A; CONSTRAINTS; COSMOLOGY; HUBBLE CONSTANT; IONIZING RADIATION
Downloads: 112
[texts]Automated mass spectrometer analysis system - NON
An automated mass spectrometer analysis system is disclosed, in which samples are automatically processed in a sample processor and converted into volatilizable samples, or their characteristic volatilizable derivatives. Each volatizable sample is sequentially volatilized and analyzed in a double focusing mass spectrometer, whose output is in the form of separate ion beams all of which are simultaneously focused in a focal plane...
Keywords: DEOXYRIBONUCLEIC ACID; IONIZING RADIATION; ENZYMES; SUBSTRATES; ESCHERICHIA; DETECTION; LINEAR ENERGY TRANSFER (LET); IRRADIATION; CYTOLOGY; BIOLOGY; URANIUM 238; REACTION KINETICS; EMITTERS; GAMMA RAYS
Downloads: 145
[texts]Guide to Lunar Orbiter Photographs - Hansen, T. P
Lunar Orbiter photographs and maps, missions 1 through 5
Keywords: ELECTROMAGNETIC ABSORPTION; SIMULATION; ELECTRON BOMBARDMENT; HIGH TEMPERATURE TESTS; LIGHT TRANSMISSION; SILICON DIOXIDE; GASEOUS FISSION REACTORS; IONIZING RADIATION; NUCLEAR PROPULSION; OPTICAL PROPERTIES
Downloads: 104
[texts]BSTJ 42: 1. January 1963: Surface Effects of Radiation on Transistors. (Peck, D.S.; Blair, R.R.; Brown, W.L.; Smits, F.M.)
Bell System Technical Journal, 42: 1. January 1963 pp 95-129. Surface Effects of Radiation on Transistors. (Peck, D.S.; Blair, R.R.; Brown, W.L.; Smits, F.M.)
Keywords: radiation; dose; surface; device; collector; transistor; bias; effects; ions; transistors; collector reverse; reverse current; surface effects; radiation dose; dose rate; diffused silicon; ionizing radiation; bell system; system technical; radiation effects
Downloads: 36
[texts]Folkscanomy Electronics Articles: Radiation Monitor
Folkscanomy Electronics Articles: Radiation Monitor
Keywords: radiation; radalert; radon; radioactive; cpm; alpha; decay; beta; uranium; ionizing; ionizing radiation; background radiation; total count; radiation level; decay chain; naturally occurring; geiger counters; gamma rays; count mode; alert level
Downloads: 33
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